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Dairy Cattle And Reproduction

Subjects : industries, dairy
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Duct through penis that carries sperm and urine






2. Animal which has been castrated after puberty






3. Small tubes located at the upper ends of the uterine horns. connects uterine horn to infundibulum. passageway of the egg.






4. Implies the amount of estrogen production






5. Animals which have many estrous periods during certain periods per year (ex: mare - ewe)






6. Produce testosterone. located between the seminiferous tubules






7. Constitute 50-90% of the volume of the ejaculate. (3 glands total: seminal vesicles - prostate gland - cowper's gland)






8. Reproduction. more offspring leads to more feed costs - but is offset by reproduction numbers






9. The more stressed out the male is - the less sperm he is going to produce






10. Days which have increasing daylight hours


11. Can survive ~7 days in cow. vast majority <48 hours






12. Help to signal hormone levels which we need both in the brain right next to each other.






13. Microscopic - make sure not sterile - very few bulls are actually tested






14. 147 days






15. 24 hours before end of estrus cycle






16. 1. need to be restricted in amt of grain - 2. no more than 70% of ration can be concentrates. 3. *Acidic acid has to be produced in order for milk synthesis to occur (30% forages)






17. Days which have decreasing daylight hours


18. Knife-loose ~1wk of growth. band-loose ~2wks of growth.






19. 283 days






20. Important 'landmark' during palpation






21. % of fat in milk. makes cheeses and ice cream. regulates cost of milk






22. Boars and stallions-> deliver semen directly into the cervix. bulls and rams-> deliver semen into the vagina.






23. Castration tool which clamps down on the vans deferens. causes the sperm to not reach the penis to be ejaculated






24. Supply nutrients for the sperm following ejaculation and deposition into the female reproductive tract






25. Sperm is produced here






26. 336 days






27. 16-20 hours






28. Duct which connects epididymis to urethra of the penis. transports sperm at ejaculation. cut to sterilize male.






29. FEED






30. Organ of copulation - provides passageway for semen and urine - muscular organ characterized especially by its spongy - erectile tissue that fills with blood






31. Front feet and head first. (except for hogs and dogs)






32. Allows extension of penis without fibro-elastic penis






33. Head - neck - mid-piece - tail. genetic material - has an enzyme covering that allows it to penetrate the egg






34. What about the sperm for a bull which has been castrated but still has testicles?






35. Depository for semen during insemination. where urine leaves the body






36. Head - neck - mid-piece - tail. genetic material - has an enzyme covering that allows it to penetrate the egg






37. Indicator of sperm production. the bigger the scrotal circumference the bigger volume of sperm because more seminal vesicles available to produce the sperm






38. Animals which have many estrous periods per year (ex: cow - sow)






39. Animals which have only one estrous cycle (ex: dog - fox)






40. 10-37 (21) days






41. 26 hours after estrus begins






42. When are steers and heifers weaned from bottle feeding?






43. Scar tissue plugs up chambers of udder






44. 19-23 (21) days






45. Days which have decreasing daylight hours


46. Birthing process (termination of gestation)






47. (male) pushes the testes outward toward the legs for a cool-down off of the body






48. When she is pregnant in her last trimester because she needs the energy to carry around and deliver the calf. and when the calf is born because the cow needs the fat to be deposit it into her milk for the calf's energy stores.






49. Standing to be mounted (last one able to notice); mounting other animals; social behavior-restless - gregarious - activity - vocalizing; frequent urination; mucous discharge






50. Luteolysis happens because of the ____________ hormone